homeopathy
"...for the purposes of popular discourse, it is not necessary for homeopaths to prove their case. It is merely necessary for them to create walls of obfuscation, and superficially plausible technical documents that support their case, in order to keep the dream alive in the imaginations of both the media and their defenders." --Ben Goldacre
If homeopathy works, then obviously the less you use it, the stronger it gets. So the best way to apply homeopathy is to not use it at all. --Phil Plait
Classical homeopathy originated in the 19th century with Samuel Christian Friedrich Hahnemann (1755-1843) as an alternative to the standard medical practices of the day, such as phlebotomy or bloodletting. Opening veins to bleed patients, force disease out of the body, and restore the humors to a proper balance was a popular medical practice until the late19th century (Williams 2000: 265). Hahnemann rejected the notion that disease should be treated by letting out the offensive matter causing the illness. In this, he was right. On the other hand, he argued that disease should be treated by helping the vital force restore the body to harmony and balance. In this, he was wrong. He rejected other common medical practices of his day such as purgatives and emetics "with opium and mercury-based calomel" (ibid.: 145). He was right to do so. Hahnemann's alternative medicine was more humane and less likely to cause harm than many of the conventional practices of his day.